Finding the Third Proportional to 669,353.50 and 1,019,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   669,353.50 : 1,019,719.50 = 1,019,719.50 : x
2. Step 2: Convert to fraction form
   669,353.50/1,019,719.50 = 1,019,719.50/x
3. Step 3: Cross multiply
   669,353.50x = 1,019,719.50 × 1,019,719.50
4. Step 4: Simplify right side
   669,353.50x = 1,039,827,858,680.25
5. Step 5: Solve for x
   x = 1,039,827,858,680.25/669,353.50
6. Step 6: Final answer
   x = 1,553,480.87